On 9 August 2024, an ATR 72-500 at FL170 encountered weather conditions which led to airframe icing. Indicated airspeed decreased quickly without corrective action despite corresponding alerts. Almost immediately after an ‘INCREASE SPEED’ alert during a turn, the aircraft stalled, eventually entering a flat spin until impacting terrain in a residential area. Impact and a post-crash fire destroyed the aircraft, and all occupants were killed. The investigation is continuing.